installation manual rec twinpeak series new module...rec twinpeak series installation manual - ul...

NEW MODULE

InstallatIon manual

rec TwinPeak SERIEsFor the installation of REC TwinPeak Series solar panels certified according to UL 1703

Caution: Only qualified personnel should perform work on photovoltaic systems such as installation, commissioning, maintenance and repairs. Be sure to follow the safety instructions for all system components. Ensure relevant local codes and regulations for health and safety and accident prevention are observed.

REC TwinPeak Series Installation Manual - UL 1703

Rev B - 03.15 Ref: NE-06-08-B2

TabLE oF FigURES 2IntRoDuCtIon 3

How To USE THiS MaNUaL 3YoUR RESPoNSibiLiTY aS aN iNSTaLLER 3SUPPoRT 3LiabiLiTY DiSCLaiMER 3

ElECtRICal InstallatIon 4ELECTRiCaL REQUiREMENTS 4

i) SYSTEM REQUiREMENTS 4ii) CoNNECTioN 4iii) STRiNg CoNFigURaTioN 4iv) wiRiNg LaYoUT 4v) JUNCTioN box, CoNNECToRS aND MaTERiaLS 4vi) CabLE MaNagEMENT 4vii) ELECTRiCaL RaTiNgS 4

SaFETY MEaSURES 4i) SaFETY iN THE woRkiNg aREa 4ii) PREvENTiNg CURRENT gENERaTioN 4ii) SPECiFiC HazaRDS oF DC ELECTRiCiTY 4iv) SaFETY REQUiREMENTS 4

mECHanICal InstallatIon 5FiRE gUiDELiNES 5oRiENTaTioN 5ENviRoNMENTaL FaCToRS 5PaNEL HaNDLiNg 5

mountInG tHE panEls 6PaNEL iNSTaLLaTioN 6

i) RaiL SPECiFiCaTioNS 6ii) CLaMP SPECiFiCaTioN 6iii) MoUNTiNg HoLES 7iv) SLiDE-iN SYSTEMS 7v) DRaiNagE HoLES 7vi) LoNg SiDE MoUNTiNg USiNg CLaMPS 8vii) SHoRT SiDE MoUNTiNg USiNg CLaMPS 8viii) gRoUNDiNg 8

maIntEnanCE 9CLEaNiNg iNSTRUCTioNS 9SYSTEM iNSPECTioN 9RECYCLiNg 9

panEl InfoRmatIon 10TECHNiCaL iNFoRMaTioN 10

DoCumEnt HIstoRy 11

number title page number title page

Fig. 1 Panel mounting options 6 Fig. 7 Drainage holes 7

Fig. 2 Rail specifications 6 Fig. 8 Long side mounting 8

Fig. 3 Clamp specifications 6 Fig. 9 Short side mounting 8

Fig. 4 Panels secured at four points 6 Fig. 10 Recommended grounding 9

Fig. 5 Mounting holes 7 Fig. 11 Minimum bend radius 10

Fig. 6 Mounting using mounting holes 7 Fig. 12 Panel dimensions 10

Fig. 13 Frame cross-section and dimensions 10

tablE of fIGuREs

CoNTENTS


Rev B - 03.15 Ref: NE-06-08-B3

iNTRoDUCTioNThank you for choosing REC photovoltaic panels. REC TwinPeak solar panels are ideal for delivering long-lasting and reliable power output. The panels have been created through intelligent design and are manufactured to the highest quality and environmental standards. with correct installation and maintenance, REC TwinPeak panels will provide clean, renewable energy for many years.Please read this entire manual carefully. it contains critical information on safety, as well as detailed instructions for installation, operation and maintenance of this panel. Failure to follow the procedures contained within will invalidate the warranty. Review all instructions and safety notes before working on the system. Failure to do so may lead to injury or damage to property.

How to usE tHIs manualThis installation manual describes the procedures for mounting all REC TwinPeak solar panels in a photovoltaic array (certified according to the UL 1703 standard), including REC TwinPeak panels with a black backsheet and/or a black frame, from hereon all referred to as REC TwinPeak panels. The drawings within refer to all frame, backsheet and cell color types and are meant to be a generic representation of the instructions detailed in the text regardless of the color depicted. The installed panel is only considered to be in compliance with UL 1703, only when mounted in the manner specified by these mounting instructions below. Note that any panel without a frame (laminate) is not considered to comply with the requirements of UL 1703 unless mechanically installed with hardware that has been tested and evaluated with the panel under this standard or by a field inspection certifying that the installed panel complies with the requirements of UL 1703.Review the entire manual before installing the panels and ensure you are working from the latest version. Throughout the manual, you will see the icons below which highlight important information or notes:

Indicates potential for damage to the array or property or personal safety.

Indicates important notes on best practice to help with the installation or to avoid potential damage to the panels, array or property.

For further information on installation procedures, please call your distributor or contact your local REC Solar office. Details available at www.recgroup.com.

youR REsponsIbIlIty as an InstallERinstallers are responsible for the safe and effective installation and operation of the photovoltaic system and for adhering to all local and national standards and regulations. Prior to installation, check all applicable regulations and permits concerning solar systems and ensure all local directives are observed.• Ensure the REC TwinPeak panels are in a suitable condition for use and appropriate for the particular installation and environment• Use only parts that convene to the specifications set out in this manual• Ensure a safe installation of all aspects of the electrical array

All equipment should be properly maintained and inspected prior to use.

suppoRtDo not attempt to install when you are unsure of the procedure or suitability. For questions or guidance with your installation, please call your distributor or contact your REC sales office, which can be found at: www.recgroup.com/en/contacts.

lIabIlIty DIsClaImERREC SoLaR PTE. LTD. accepts no liability for the usability and functionality of its photovoltaic panels if the instructions in this guide are not followed. Since compliance with this guide and the conditions and methods of installation, operation, use and maintenance of the panels are not checked or monitored by REC SoLaR PTE. LTD., REC SoLaR PTE. LTD. accepts no liability for damage arising from improper application or incorrect installation, use, operation or maintenance. This does not apply to damages due to a panel fault, in cases of loss of life, bodily injury or damage to health or in the event of a grossly negligent breach of obligations on the part of REC SoLaR PTE. LTD. and/or in the event of an intentional or grossly negligent breach of obligations by a legal representative or vicarious agent.


Rev B - 03.15 Ref: NE-06-08-B4

ELECTRiCaL iNSTaLLaTioN ElECtRICal REQuIREmEntsi) system RequirementsREC TwinPeak panels are only for use where they meet the specific technical requirements of the complete system. Ensure other components do not cause mechanical or electrical damage to the panels.

ii) Connectionif panels are connected in series, they should have the same amp rating. if panels are connected in parallel, they should have the same voltage rating.

iii) string configurationwhen using string configuration, plan and execute it according to inverter manufacturer’s instructions. The number of panels connected to an inverter should be within the inverter voltage limits and operating range. Do not exceed the total system voltage permitted by the manufacturer, nor under any circumstance exceed the maximum system voltage of 1000 v. The maximum reverse current is 15 a and the maximum series fuse rating is 15 a.

iv) wiring layoutTo minimize voltage surges (e.g. indirect lightning strikes), cables of the same string should be bundled together so loops are as small as possible. String configurations must be checked before commissioning. if open circuit voltage (voC) and short circuit current (iSC) deviate from specification, this may indicate a configuration fault. Correct DC polarity should be observed at all times.

v) Junction box, connectors and materialsThe panel junction box is rated iP67, the connectors are rated iP67 only when correctly connected. all connectors and cables must be secure and tight as well as electrically and mechanically sound. Uv-resistant cables and connectors approved for outside use must be used. Conductor gauge must ensure DC power losses (voltage drop) are kept to a minimum (< 1%). observe all local regulations when selecting cables. For field connections, use minimum 12 awg (4 mm²) or copper wires insulated for a maximum operating temperature of 90°C.

vi) Cable managementCables must be secured using Uv-resistant cable ties or other sunlight-resistant device. Loose and unsecured cables should be protected from damage (e.g. mechanical, abrasion, sharp objects, animals). as far as possible, avoid exposing cables to direct sunlight and permanent tension.

REC prohibits any modification to the panel, including the cutting of cables in order to change the connector type or the opening of the junction box unless explicitly authorized by REC. Doing so will invalidate the warranty.

vii) Electrical RatingsUnder normal conditions, a photovoltaic panel is likely to experience conditions that produce more current and/or voltage than reported at STC. The requirements of the National Electric Code (NEC) in article 690 must be followed to address these increased outputs. in installations not under the requirements of the NEC, the values of iSC and voC marked on the panels must be multiplied by a factor of 1.25 when determining component voltage ratings, conductor ampacities, overcurrent device ratings and size of controls connected to the Pv output.

safEty mEasuREswiring installation shall be in accordance with the NEC (or CSa C22.1, Safety Standard for Electrical installations, Canadian Electrical Code, Part 1 where applicable). all relevant electrical installation codes and regulations should be observed for regulations on working at heights and fall protection.

i) safety in the working areainstallation of REC TwinPeak panels may involve working on a roof. Ensure all local regulations regarding working at heights are followed. before beginning work on a photovoltaic system, ensure all working surfaces are structurally sound and capable of bearing the weight of employees and required equipment. Remember to isolate the system from the grid before carrying out any maintenance or repair work.

ii) preventing current generationSolar panels automatically generate current (electricity) when exposed to light. To prevent this, shield the system with a non-transparent cover during installation, maintenance or repair work.

ii) specific hazards of DC electricitySolar panels generate direct current (DC). once current is flowing, breaking or opening a connection (e.g. removing a DC cable from the inverter) can cause an electrical arc. Unlike low voltage aC wiring, DC arcs are not self-extinguishing. They are potentially lethal burn and fire hazards, capable of high temperatures that can destroy contacts and connectors:• Follow panel and inverter manufacturers’ installation, handling and operating instructions• Remove/open the inverter aC fuse/circuit breaker before disconnecting from the public grid.• Switch off or disconnect the inverter and wait for the time specified by the manufacturer before commencing work. High-voltage components

need sufficient time to discharge.

iv) safety requirementsThe voltage produced by a single panel and panels connected in series (voltages added together) or in parallel (currents added together) can be dangerous. although the fully insulated plug contacts on the panel’s output cables provide touch-safe protection, the following points must be observed during handling to avoid the risk of sparking, fire hazards, burns and lethal electric shocks.• Exercise extreme caution when wiring panels and look out for damaged or dirty cables etc.• Never insert metallic or other conductive objects into plugs or sockets.• Ensure that all electrical connections are completely dry before assembly.• keep all materials, tools and working conditions dry and tidy.• Use appropriate safety equipment e.g. nonslip footwear, insulated gloves and insulated tools. • Solar panels produce current when exposed to sunlight. Do not connect the system to the inverter during solar exposure.


Rev B - 03.15 Ref: NE-06-08-B5

panEl HanDlInGTo avoid damage to the solar cells and other components, all solar panels should be handled with care. all warnings and instructions on the packaging should be observed. Follow these guidelines when unpacking, transporting or storing the panels:• Record the serial numbers prior to installation and note the information in the system documentation. • Carry the panels using both hands and avoid using the junction box as a grip.• Do not allow the panels to sag or bow under their own weight when being carried. • Do not subject the panels to loads or stresses e.g., leaning or placing heavy objects on them. • Do not stand on the panels or cause impact through dropping them. • keep all electrical contacts clean and dry.• Store panels in a dry and properly ventilated room.• Do not apply force to the backsheet.• avoid using sharp or pointed objects if panels require marking.• Never apply paints, adhesives or detergents to the back of the laminate.• Do not use any solar panel that is damaged or been tampered with.• Never attempt to disassemble the panels.

If the panel front glass is broken or laminate back sheet is damaged, it can expose personnel to hazardous voltages.

MECHaNiCaL iNSTaLLaTioN fIRE GuIDElInEsREC TwinPeak panels have a Class C, Type 2 Fire classification. The fire rating of this panel is only valid when mounted in the manner specified in these mechanical mounting instructions. Utilize the following fire safety guidelines when installing REC TwinPeak panels: • Check with local authorities for fire safety guidelines and requirements for any building or structure on to which the panels will be installed.• The system design should ensure that it can be easily accessed in the event of a building fire. • Check with local authorities for applicable regulations concerning setbacks or other placement restrictions that may apply for roof-mounted

arrays.• The use of DC ground fault interrupters is recommended. This may also be required by local and national codes.• all electrical appliances are a fire risk. The panel should therefore be mounted over a fire retardant roof covering rated for the application and

a suitable distance of 4 in (100 mm) between the panel and the mounting surface, allowing free circulation of air beneath the panels, should be respected at all times.

oRIEntatIonTo maximize system output, panels should be installed at the optimum orientation and tilt angle. The specifics of this depend on location and can be calculated by a qualified system designer. a lower angle of panel installation increases the requirement for regular cleaning. The optimal mounting position of panels results in the sun’s rays falling perpendicular (i.e. at 90°) to the surface. all panels in a string should, wherever possible, have the same orientation and tilt to ensure the system does not underperform due to mismatched outputs.

The panels must not be exposed to artificially concentrated sunlight.

EnVIRonmEntal faCtoRsREC TwinPeak panels are designed to provide decades of durable and stable output. ambient operating temperatures should be between -40 and 185°F (-40 and +85°C). The panels are not suitable for installation in potentially hazardous locations nor should they be installed in the following locations: • Near sources of flammable gases or vapors• Near open flames.• Under water or in water features.• where exposed to sulfur e.g. near sulfur springs or volcanoes.• where the panels may be exposed to harmful chemicals.

Ensure panels are not exposed to direct contact with salt water/spray and avoid installation in areas subject to high salt mist content e.g. coastal areas.

x

x

grip lengthmin 1.75 in

grip lengthmin 1.75 in

grip depth min 0.2 ingrip depth 0.2 in

Fig. 3: Clamp specifications

walls exposed to load min 0.156 in

Fig. 1: Panel mounting options:

(b) rails parallel to the short side(a) rails parallel to the long side

Rail positioning

Rail positioning

Rail positioning

Rail positioning


Rev B - 03.15 Ref: NE-06-08-B6

MoUNTiNg THE PaNELSREC TwinPeak solar panels are designed for capturing solar radiation and are not suitable for installation as overhead or vertical glazing. The panels are considered to be in compliance with UL 1703, only when the panel is mounted according to the the mounting instructions specified below. The REC junction box on the back of the panel is protected to iP67 and hence panels can be mounted in any orientation.

panEl InstallatIoni) Rail specificationsREC TwinPeak panels are typically installed on a rail-based mounting system. There are different methods of installing an REC TwinPeak panel, each decribed below, depending on the design load of the array. The rails can run under the frame or parallel to the frame, directly under the clamping zones (fig 1a & 1b). Ensure the mounting structure is able to withstand anticipated wind and snow loads.

walls for mechanical connectorswalls exposed to buckling load

Fig. 2: Rail specification

C channel rail H channel rail

The clamps should be fastened to C or H channel rails (fig. 2).• Thickness of walls for mechanical connections: min. 0.156 in (4.0 mm)• Thickness of walls exposed to buckling load: min. 0.08 in (2.0 mm)• Moment of inertia for profile area about x-x: min array mounting diagram 0.4 in4 (19.2 cm4)

The overlap between support rail and the outer edge of the panel frame must be a minimum of 1/64 in (6 mm).

ii) Clamp specificationREC TwinPeak panels have been evaluated by UL for mounting using C-channel-rails in combination with end and mid clamps, 5/16 in (8 mm) aSTM F593C stainless steel screw and rail nuts. alternatively clamps with the below ratings and dimensions can be used to secure the panel to the mounting structure (fig. 3):• Minimum yield strength of 2089 ton/ft² (200 Mpa)• Minimum tensile strength of 2610 ton/ft² (250 Mpa), e.g. 6005 T5 alloy. • Minimum grip length of 1.75 in (44.45 mm)• Minimum grip depth of 0.29 in (5 mm)• Minimum thickness of load carrying walls of 0.156 in (4 mm)• Screw connection – 5/16 in (8 mm) stainless steel bolt, 5/16 in split washer (8 mm), nut

Fig. 4: Panels secured at four points.

Each panel must be securely fixed to the mounting structure at a minimum of four points (fig.4).

Ensure a minimum distance of 4 in (100 mm) between the uppermost part of the roof and the lowest part of the panel to ensure sufficient airflow beneath the panels, aiding cooling and boosting performance.


Rev B - 03.15 Ref: NE-06-08-B7

Part Name Material Specification

bolt aSTM F593 (stainless steel) 1/4” x 20 - 5/8”

Flange Nut aSTM F594 (stainless steel) 1/4” x 20

When using mounting holes, fixings must be fastened to 9 ft-lbs (12 Nm) of torque and installation must be according to fig. 6.

Install the above parts as shown in fig. 6. Consult the Unirac Code Compliant Installation Manual for further details where necessary. For areas where discrepancy may exist, this installation manual shall take precedence.

iii) mounting holesMounting utilizing the four elongated holes (0.26 x 0.43 in (6.6 x 11 mm)) on the underside of the panel frame (at a distance of 17.72 in (450 mm) from the midpoint of the long side) have been found to comply with UL 1703 requirements for a maximum design load of 75.2 lbs/ft² (3600 Pa) (fig. 5).when mounting using mounting holes, the frame and panel edge must be supported by two transverse rails (fig. 1), of aluminium or galvanized steel to avoid galvanic corrosion and be appropriate for the local environment. These must be held in position by bolts and flange nuts according to the specifications below. if bought in a kit, do not use the washers and bottom mounted clips provided if they do not match the specifications below:

Mounting holes

Fig. 5: Mounting holes Fig. 6: Mounting using mounting holes

38

GR

GR

GR

GR

28

1665±2,5

900382,5

950

991±2,517

45

11±0,26,6±0,220,5±0,5

vii) short side mounting using clampsMounting utilizing clamps on the two short sides of the panel have been found to be in compliance with UL 1703 requirements for a maximum design load of 33.4 lbs/ft² (1600 Pa) (fig. 9).• Fix the panels so that the lower short side of the frame is supported by the mounting structure (to reduce risk of damages due to sliding snow load).• Clamps must be secured between a distance of 4.9 and 9.8 inches (125 – 250 mm) from the panel corner to the clamp edge.• Tightening torque must be tightened to 16 ft-lbs (21.7 Nm).• The minimum distance between the end clamp and the end of the rail is 1 in (25 mm).• Mechanical load must not exceed 33.4 lbs/ft (1600 Pa).• The overlap between support rail and frame must be a minimum of 1/4 in (6 mm).

In areas of snow build-up, panels can be subjected to forces in excess of the stated limit even when snow depth does not appear extreme, causing damage to the framework. If the installation is likely to be affected, further suitable panel support is recommended on the lower row of panels.

Ensure the drainage holes are not covered by the mounting structure.

vi) long side mounting using clampsMounting utilizing clamps on the two long sides of the panel have been found to be in compliance with UL 1703 requirements for a maximum design load of 75.2 lbs/ft² (3600 Pa) (fig. 8).• Clamps must be secured between a distance of 8.2 in to 16.4 in (208 mm - 416 mm) from the corner of the panel (measured from the mid-point)

to the clamp edge.• Tightening torque must be tightened to 9 ft-lbs (12 Nm).• The distance between the end clamp and the end of the rail must be minimum 1 in (25 mm).

Fig. 8: Long side mounting Fig. 9: Short side mounting

8.2”-16.4”

1”

1” 4.9”-9.8”

GR

GR

GRGR

GR

-

+


Rev B - 03.15 Ref: NE-06-08-B8

Where common grounding hardware (nuts, bolts, star washers, split-ring lock washers, flat washers and the like) are used to attach a listed grounding/bonding device, the attachment must be made in conformance with the grounding device manufacturer’s instructions.

viii) Groundinga panel with exposed conductive parts is considered to be in compliance with UL 1703 only when it is electrically grounded in accordance with the instructions presented below and the requirements of the National Electrical Code. grounding is achieved through securement to the panel frame of the following UL Listed grounding Clips / Lugs in combination with the REC TwinPeak panel(s).• Suitable grounding lugs must be used: Listed (kDER) iLSCo, gbL-4DbT (tin plated) (E34440).• grounding cable size should be between 4 - 14 awg (2.1 mm² - 21.2mm²).• attach grounds to the grounding holes in the panel frames. • Fix lug to the frame using a star washer (#10) and lock nut (#10), ensuring a conductive connection (fig. 10). Tighten according to manufacturer’s

instructions.

Fig. 10: Recommended grounding

To avoid galvanic corrosion, stainless steel fastening materials are preferred, however galvanized or hot dipped zinc plated fasteners are equally suitable.

grounding cableStar washer

grounding lug dimensions and wire fastening torque for gbL-4DbT

Fig. 7: Drainage holes

v) Drainage holesThere are eight drainage holes, 0.47 x 0.30 in (12 x 7.5 mm) in the panels frame, each spaced 2.2 in (55 mm) from the corner of the panel frame (fig. 5). This allows water caused by rain or snow melt to exit the frame easily and minimizes the damage caused by freezing and thawing. Ensure these holes are not covered by any part of the mounting structure.

observe the following procedures when using mounting holes (fig. 5):• additional electrical bonding to Earth is required for the support structure (see page 12).• all four mounting holes in the frame must be used (for long or short-sided mounting orientation).• Fixings must be tightened to 9 ft-lbs (12 Nm) using a torque wrench.

The warranty will be voided if additional holes are made in the frame. All fixing and fastening materials should be corrosion resistant.

iv) slide-in systemsREC TwinPeak panels have not been certified by UL for use with slide-in type mounting systems. if you have any questions regarding a mounting system and its suitability for REC TwinPeak panels, please contact your local office for technical support.

Cross section [AWG] Type Torque [in-lbs]

4 - 6 Stranded 35

8 Stranded 25

10 - 14 Stranded / Solid 2.8


Rev B - 03.15 Ref: NE-06-08-B9

MaiNTENaNCEClEanInG InstRuCtIonsREC TwinPeak panels have been designed for easy maintenance. Normal rainfall will naturally clean the panels if installed at a sufficient angle. The need for cleaning will vary dependent on location, rainfall, pollution and angle of installation – the lower the angle of installation, the more cleaning will be required. To optimize electrical output it is recommended to clean the panels when dirt can be seen on the glass surface.

Cleaning of the panel should be carried out in the early morning when the panels are cool to avoid thermal shock.

if dirt remains on the panel, it may cause cell shading which will reduce power output or even cause further damage. To clean either the front or rear of the panels, use only deionized water at ambient temperature and a sponge, microfiber cloth or a soft brush to wipe away the dirt (rainwater, tap water or diluted alcohol may also be used as a secondary solution). For further cleaning a mild, biological and biodegradable washing-up liquid may be used.

when cleaning the panel, take care not to scratch the surface or introduce foreign elements that may cause damage. Ensure water used is free from grit and physical contaminants that may damage the panel. always rinse the panel with plenty of water. if soiling remains, repeat the cleaning process. if stains require more effort to be removed, iso-propyl alcohol of a concentration less than 10%. acid or alkali detergent may not be used

Use of high pressure hoses or cleaners is not permitted as these may damage the panel, laminate or cells.

Using a rubber squeegee, wipe the panel surface from the top downwards motion to remove any residual water from the panel glass. Panels can be left to dry in the air or wiped dry with a chamois. avoid putting pressure on the panel surface when drying.For more information on cleaning REC panels, consult the Cleaning information Sheet available to download from the online REC installer Portal www.recgroup.com/installers.

systEm InspECtIonThe system should be inspected regularly to ensure that: • Fasteners are secure, tight and free from corrosion.• Electrical connections are secure, tight, clean, and free of corrosion. • The mechanical integrity of the cables is intact.• bonding points to ground are tight, secure and free from corrosion (which could break the continuity between the panels and ground).

RECyClInG REC has made every effort to ensure panel packaging is kept to a minimum. The paper and cardboard packaging can be recycled and the protective wrapping and panel separating blocks are also recyclable in many areas. Please recycle according to local guidelines and regulations.

< 60 mm >

< 30 mm

>

CoNNECTioNS aND CoNNECToRSin order to ensure durable and safe connections between panels and boS equipment, the following instructions must be followed in order to protect the electrical connections from the elements. More detailed information is given in the guide to best Practice - Connections and Connectors which can be found via the REC website Download Center (www.recgroup.com/downloads).

ConnECtoRs• Connectors must be securely joined to each other according to the manufacturer’s instructions. REC explicitly excludes the cutting of cables and

replacement of connectors. if this causes an issue for a particular site, contact REC via www.recgroup.com for further advice• The use of any chemicals or lubricants on the connectors or contacts must be carried out in line with the connector manufacturer’s instructions

pRotECtInG tHE CablEs• To prevent stress on the junction box casing, ensure the cable exits the junction box in a straight line before any bend in the cable.• The cables on REC TwinPeak panels have a minimum bending radius of 30 mm to avoid damage to the insulation (Fig. 9)• Ensure cables do not hang loose where they may be damaged through friction or stress, e.g., caused by wind or grazing animals• Shield connectors from falling or dropping water by locating them directly beneath a panel• Cables must be firmly secured to the structure, without overtightening, as this can deform the cable insulation

Fig. 11: Minimum bend radius of 1.2 in (30 mm)

sECuRInG CablEs anD ConnECtoRs• when securing the connector, place it away from the mounting structure with sufficient air circulation all around. This allows the connector to dry

effectively and avoids the risk of damage or degradation of the connection• good practice is to secure the cable either side of the connectors, ensuring no stress is exerted on the connector casing or cable entry

To enable correct cooling and drying of the connectors, do not add extra protection to the connector, e.g., heat shrink, grease or tape

2.4 in

1.2 in


Rev B - 03.15 Ref: NE-06-08-B10

PaNEL iNFoRMaTioNtECHnICal InfoRmatIon

GENERAL DATAMEChANICAL DATA

MAXIMUM RATINGS

1.5

GR

GR

GR

GR

1.1

65.5 ±0.1

35.4 15.05

37.4

39 ±

0.1

0.7

1.8

35

47

0.43 ±0.8 0.26

±0.

080.

78 ±

0.08

Mounting holes38

12

31.5

28

1.7

0.47

1.51.24

1.1

0.07

Fig. 13: Frame cross-section and dimensions (in)

ELECTRICAL DATA @ STC REC265* REC270* REC275*

Nominal Power - PMPP (wp) 265 270 275watt Class Sorting - (w) 0/+5 0/+5 0/+5Nominal Power voltage - vMPP (v) 30.9 31.2 31.5Nominal Power Current - iMPP (a) 8.59 8.67 8.70open Circuit voltage - voC (v) 37.3 38.0 38.3Short Circuit Current - iSC (a) 9.21 9.29 9.38Panel Efficiency (%) 16.1 16.4 16.7The electrical characteristics are within +/-10 percent of the indicated values of iSC, voC and PMPP under standard test conditions (STC). values at STC (airmass aM 1.5, irradiance 1000 w/m², cell temperature 25°C (77°F)). at low irradiance of 200 w/m² (aM 1.5 and cell temperature 25°C) at least 94% of the STC panel efficiency will be achieved

* followed by TP, TP(bLk), TP ECo.

Fig. 12: Panel dimensions (in)

Dimensions: 65.55 x 39.02 x 1.5 in area: 17.76 ft²

weight: 39.6 lbs

operational Temperature: -40 ... +185°F (-40 ... +85°C)Maximum System voltage: 1000 v Design Load: 75.2 lbs/ft² (3600 Pa)*

33.4 lbs/ft² (1600 Pa)* *Dependent on mounting method as described above

Max Series Fuse Rating: 15 aMax Reverse Current: 15 a

Cell type: 120 REC HC multi-crystalline 6 strings of 20 cells (6" x 3")

glass: 1/8" mm solar glass with anti-reflective surface treatment

back sheet: Double layer highly resistant polyester Frame: anodized aluminum (silver/black)**Junction box: 3-part with bypass diodes

iP67 rated 4 mm² solar cable, 35" + 47"Connectors: Multi-Contact MC4 (4 mm²)origin: Made in Singapore

* *Dependent on product type chosen

DoCUMENT HiSToRY

Date Revision number Reason

01.2010 a First release

12.2014 a.2 Update to Electrical data @ STC (275 wp iMPP)

12.2014 a.3 Update to Electrical data @ STC (addition of 260 & 280 wp), revision of low light behavior data in Electrical Data

03.2015 b Updated to include information on panel variants

REC SoLaR PTE. LTd.20 TUaS SoUTh avENUE 14SINgaPoRE 637312SINgaPoRETel: +65 6495 9228Mail: [email protected]

www.recgroup.com

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